package service.student.impl;import dao.student.StudentDao;import dao.student.impl.StudentDaoImpl;import dao.student.impl.StudentDaoImpl2;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Component;import org.springframework.stereotype.Service;import service.student.StudentService;@Servicepublic class StudentServiceImpl2 implements StudentService {    @Autowired    private StudentDao studentDaoImpl;    @Override    public void addStudent() {        System.out.println("this is two student!");        studentDaoImpl.addStudent();    }    @Override    public void queryStudent() {    }    @Override    public void updateStudent() {    }    @Override    public void deleteStudent() {    }}